LM5037

SNVS578D – NOVEMBER 2008 – REVISED MAY 2015

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7 Detailed Description

7.1 Overview

The LM5037 PWM controller contains all the features necessary to implement double-ended power converter

topologies such as push-pull, half-bridge and full-bridge. The unique architecture allows the modulator to be

configured for either voltage-mode or current-mode control. The device provides two alternating gate driver

outputs to drive the primary-side power MOSFETs with programmable forced dead-time. The device can be

configured to operate with bias voltages ranging from 13 V to 100 V. Additional features include line undervoltage

lockout, cycle-by-cycle current limit, voltage feed-forward compensation, hiccup mode fault protection with

adjustable delays, soft-start, a 2-MHz capable oscillator with synchronization capability, precision reference and

thermal shutdown. These features simplify the design of double ended topologies. The Functional Block Diagram

section shows the functional block diagram.

10

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